Dione can't support life or liquid oceans, but check out other gas giant moons
                                
                                
                                    (Newser) -
                                    Good news for future space colonists: Saturn's icy moon, Dione, contains a thin layer of oxygen that hints at life on other gas giant satellites, the  BBC  reports. Spotted by the Cassini spacecraft about two years ago, Dione's oxygen layer lacks the necessary density to support life and...